What is the name of this ion: sn4?

a. tin (ii)

b. tin (iv)

c. scandium (iv)

d. scandium (ii)

Which of these properties is the best one to use for identification of an element? 1. the number of neutrons in the atomic nucleus 2. the number of protons in the atomic nucleus 3. the number of isotopes that are formed by the element 4.

An explosion is a rapid chemical reaction that results in a considerable increase in volume of gases. a. True b. False

Based on the equation below how many liters of water can be produced from 8.5 L of oxygen gas. (assume that hydrogen is in excess) 2H2 + O2 = 2H2O

Twenty-four grams of magnesium metal reacts with sixteen grams of oxygen gas to form magnesium oxide. According to the law of conservation of mass, how much magnesium oxide will there be after the chemical change is complete? never mind i got it

Which is the correct symbol for an isotope of bromine with 35 protons and 38 neutrons? A) 35Br38 B) 73Br C) 35Br D) 73Br

A discharging lead-acid battery is best described as 1.) chemical cells that use an electrical current 2.) chemical cells that produce an electrical current 3.) electrolytic cells that use an electric current 4.

Which direction does 3A + 2B = C + 2D + Heat

Which of the following shows a correct relationship between first ionization energies of the given atoms? View Available Hint (s) Which of the following shows a correct relationship between first ionization energies of the given atoms?

How many moles of AlCl3 are in 2.25L of a 0.15 molar solution? A. 0.07 moles B. 0.15 moles C. 0.34 moles D. 15

Which kind of element forms covalent bonds give two reasons for this